Fuel-gas burner.



J. 0. BBCKFIELD.

FUEL GAS BURNER.

' APPLIUATION FILED NOV. 30, 1908.

1,016,869, Patented Feb. 1912.

INVENTOR XM W Mm 40 the burner) to JOHN C. BECKFIELD, OF PITTSBURGH, PENNSYLVANIA.

FUEL-GAS BURNER.

Specification of Letters Patent.

Patented Feb. 6, 1912.

Application filed November 30, 1908. Serial No. 465,429.

To all whom it may concern:

Be it known that I, JOHN C. BEoKrIELn, a citizen of the United States, residing at Pittsburgh, in the county of- Allegheny and State of Pennsylvania, have invented a new and useful Improvement in F nel-Gas Burners, of which improvement the following is a specification.

My invention relates to improvements 1n fuel gas burners.

eral character, it is of the utmost importance to break the, combustible gas into a great number of attenuated streams or jets in order to attain the greatest efiiciency in the combustion thereof, and to accomplish this purpose, it is usual to form in the to or side walls of the burner numerous small holes or perforations for the emission of the gas and at which points the gas is ignited.

he methods heretofore used to form these holes, viz., drilling or casting the same in the burner, not only consumed time and labor but were ineffectual for the reason that it is extremely difficult to form the holes or perforations of requisite size and with sufficient accuracy to prevent flashing back in the mixer or in sufiicient number and sufiiciently close to produce good results, much less the best results.

One of the principal advantages of my 3 improved burner is that holes or perforations of the required number, size, and location (which may be varied in number dependent upon the composition of the gas without alteration of the parts composing roduce maximum etficiency, are produced without drilling as heretofore. I accomplish this object by means of the device hereinafter described, reference being had to the accompanying drawings, forming part hereof, in which Figure 1 is a vertical central section of my improved burner; Fig. 2 is a section similar to Fig. 1, but taken through the projections a. Fig. 3 is a plan view of the burner, the

top being partly broken away; Fig. 4 shows a plan view of one of the annular members which constitute the perforated portion of the burner. Fi 4 is a side elevation of the same. Fig. 5 s ows a plan View of one of the narrow partition rings interposed between each of said annular members. Fig.

5 is a side elevation of the same. Fig. 6 is a section of the upper portion of the burner, showing a preferred form of said annular member; and Fig. 7 is a sectional elevation of a preferred form of one of the annular members.

Referring to said drawings, 1 is the stem of the burner, the lower end of which is provided with a connection 2, which communicates with the chamber or channel 3 of said stem by means of the gas admission orifice 4. The lower end of the chamber or channel 3 is preferably enlarged, as shown, and is provided with a number of orifices 5 for the admission of air to miX or admix with the gas admitted through the orifice 4. The upper portion of said stem is considerably enlarged, forming a circular chamber 6.

when the device is assembled, as shown in Fig. 1. The inner wall of said chamber is provided with a number of projections 7 in which screw-holes are formed for the reception of the screws 8, 8 which secure the top 9 and the annular portion 10 to the stem or main part of the burner, and the said screws being so disposed that their outer surfaces or outside contact with the inner surfaces or annular part 10, thereby constituting guides to prevent lateral movement of said annular part. The said annular portion 10 comprises a series of superposed rings lland 12, the rings 11 having projections or fingers a at uniform intervals around the periphery thereof, forming notches or spaces 7), the rings 12 being narrow plain rings as shown in Fig. 5, which, when interposed between the rings 11 form numerous gas emission openings 0, c, which communicate with the interior chamber 6 of the burner through the spaces 6.

It is obvious that the rings 11, 12, may be secured together in any suitable manner to form an annulus or rin depth or thickness and 1n which the gas emission orifices will be formed as heretofore specified and that the annulus when so of considerable formedcan be secured between the body pormay be formed circular or oblong, dependent upon the configuration of the body of the burner. The rings are capable of being easily and quickly stamped out of sheet steel or metal and when assembled as herein specified and shown produce a burner having the requisite number of perforations with absolute accuracy as to the size and location so as to produce the best possible results.

In Figs. 6 and 7 are shown the preferred form of rings 11, the fingers-a thereof being above the plane of the remaining portion forming the shoulder 11 whichrengages against the edges of the ring 12 when assembled and prevents lateral movement and consequent displacement of the rings which might occur through contraction and eX- pansion. I

Having described my invention, what I claim and desire tosecure by Letters Patent 1s 1. A fuel gas burner having a mixer for gas and air, and comprising a body portion, a cap to close the top thereof, and an annular portion interposed between the body portion and the cap and secured therebetween, the said annular portion comprising a series of narrow plain rings and a series of rings,

peripheries of which are provided at regular intervals with radially projecting-fingers; the said plain" rings being alternately disposed between" the rings having'fin'gers.

2; A fuel gas burner comprising a hollow chamber formed to receive a combustible gas, and a cap adapted to'close the'same, the portion of the wall of said chamber between the cap and the'lower portion thereof comprising a series of superposed thin metallic members, the edge of each alternate one of said series of members having inwardly extending slots formed between fingers, each of which is provided with a shoulder, and the other series of members being plain and seated upon the first mentioned members between the shoulder and the outer edge thereof, whereby series of gas emission openings are formed, and the said members are held against displacement by expansion and contraction.

3. A fuel gas burner comprising a hollow chamber adapted to receive gas andair, a cap to close the same, the upper portion ofthe wall of said chamber comprising a series of superposed thin metallic members, the edge of every alternate one of which isprovided Wlth" slots, the edges of the members interposed therebetween being uninterrupted,

whereby gas emission orifices are formed in the upper portion of the wall of said a chamber.

4. A fuel gas burner comprising a hollow chamber adapted to receive gas and air, a cap to close the same, the upper portion of the wall of said chamber comprising a series of thin metallic members superposed between the lower portion of said chamber and said cap and securedther'ebetween, the edge of everyalternate member 'of said series bev lingi provided: with projections, sthe projectionsib'eifng out of honzontahalinement with the remaining; portion of saidmembers, and I the remaining members of the series being plain metallic members interposed between said members. having projections,

whereby gas emission orifices are formed.

Intestimony whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

JOHN C. BECKFIELD.

In the presence of- CLARENCE A. WILpIAMs,

J. P. APPLEMAN. 

